An oceanic blacktip shark swims by with remora in tow, Aliwal Shoal, Umkomaas, KwaZulu-Natal, South Africa.

aliwal shoal carcharhiniformes carcharhinus limbatus indian ocean indo pacific ocean kwazulu natal south africa umkomaas abdomen animal animal abdomen animal head animal mouth animal themes animals hunting animals in the wild aquatic blacktip sharks blue blue background carcharhinidae carnivore cartilaginous fish chondrichthyes color image commensalism danger day ecology elasmobranch fish horizontal marine biology motion no people outdoors photography predator remora requiem sharks sea life shark side view swimming symbiotic relationship threatened species undersea underwater wildlife zoology